Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 555 053 86 30 found under Guide Valve Stem by Mtu Friedrichshafen Gmbh. The National Stock Number assigned to this part is 2815123435636, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 555 053 86 30.